The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 04, 2008
Filed:
Oct. 16, 2006
Burgess R. Johnson, Bloomington, MN (US);
Eugen I. Cabuz, Eden Prairie, MN (US);
Burgess R. Johnson, Bloomington, MN (US);
Eugen I. Cabuz, Eden Prairie, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
MEMS devices and methods for measuring Coriolis forces using force rebalancing and parametric gain amplification techniques are disclosed. A MEMS inertial sensor can include one or more proof masses, at least one sense electrode positioned adjacent to each proof mass, a number of torquer electrodes for electrostatically nulling quadrature and Coriolis-related proof mass motion, and a number of pump electrodes for producing a pumping force on the proof masses. Force rebalancing voltages can be applied to some torquer electrodes to electrostatically null quadrature and/or Coriolis-related proof mass motion along a sense axis of the device. A pumping voltage at approximately twice the motor drive frequency of the proof masses can be used to pump the proof masses along the sense axis.